Appeal No. 1999-2518
Application 08/722,213
to one claim in this group, i.e., claim 5, which depends from
claim 3 and requires that the peroxyacid bleaching system
includes a hydrogen peroxide source and a peroxyacid bleach
precursor compound.
Van Kralingen discloses a bleaching agent selected from
hydrogen peroxide, hydrogen peroxide-liberating compounds,
peroxyacids and their salts, and peroxyacid bleach precursors and
mixtures thereof (col. 5, lines 8-12). Thus, Van Kralingen would
have fairly suggested, to one of ordinary skill in the art, use
of a hydrogen peroxide source in combination with a peroxyacid
bleach precursor compound. Disclosures by Van Kralingen that the
bleaching agent is effective on a wide range of stains and is
effective over a wide pH range (col. 5, lines 1-3 and 39-42)
would have fairly suggested, to one of ordinary skill in the art,
using this bleaching agent in Collier’s composition to obtain
these benefits.
The appellants argue that Van Kralingen does not disclose
the peroxyacid bleach release time recited in claim 3 (brief,
page 12). This release time, however, would have been fairly
suggested to one of ordinary skill in the art by Collier as
discussed above with respect to the rejection of that claim. We
therefore affirm the rejection of claims 5-7, 9, 10, 23 and 25.
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